A340054 Prime numbers which can be expressed as the sum of two numbers, one of which is the rotationally ambigrammatic transformation of the other excluding leading zeros.

2, 107, 157, 929, 1069, 1567, 10007, 10079, 11657, 11927, 14897, 15667, 15937, 91019, 93529, 93629, 99689, 100207, 100279, 100669, 100699, 104179, 105359, 106297, 106759, 108287, 108649, 108707, 109097, 109267, 109297, 110567, 110597, 111577, 114377, 115777

Offset

1,1

Links

Table of n, a(n) for n=1..36.

Wikipedia, Ambigram

Example

Consider the number 16. Applying a rotationally ambigrammatic transformation gives the number 91. 16 + 91 = 107. A prime. Hence 107 is part of the sequence.
Consider the number 18. Applying a rotationally ambigrammatic transformation gives the number 81. 18 + 81 = 99. Not a prime. Hence 99 is not part of the sequence.

Crossrefs

Cf. A045574 (rotationally ambigrammatic numbers), A018848.

Sequence in context: A352496 A139887 A174409 * A267550 A224819 A156502

Adjacent sequences: A340051 A340052 A340053 * A340055 A340056 A340057

Keyword

nonn,base

Author

Philip Mizzi, Dec 27 2020

Status

approved